# Kikko: Hex Sum Puzzle — Kakuro Logic Number Game

> Kakuro Logic Number Game (iPhone/iPad app by Fırat DINC.)

- Source: https://appshunter.io/ios/app/kikko-hex-sum-puzzle/id6813215817 (this page in markdown: same URL + `.md`)
- Developer: [Fırat DINC](https://appshunter.io/developer/1869393261)
- Category: Games, Board, Puzzle
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 15.0 · 115 MB
- Languages: American English
- Released: 2026-09-22
- Data updated: 2026-10-02

## What is Kikko?

A hexagon board. One, two or three dots in each cell. Every line that carries an arrow must add up to the number on that arrow. When every arrow turns green, the board is solved.

That is the whole rule. The rest is bigger boards and the constraints that land on top of them.

— PLAY —

• 15 chapters, over 2000 generated boards
• No timer, no lives, no streak. Think as long as you like
• One tap to undo, one tap to clear
• A hint when you are stuck: it opens one cell's true value

— NEW CONSTRAINTS —

Later chapters add rules, and each one is taught on its own, on a calm board:

• Region sums — cells wrapped in a mizuhiki cord share a total
• Seals and bonds — cells tied to each other

— LOOK —

Washi paper and sumi ink. Each chapter has its own season colour. Night has its own paper: sumizome, not a darkened day but a separate world mixed from indigo.

The stones are go stones. Other stone sets are available in the market.

— QUIET —

The sound palette is koto plucks on the hirajoshi pentatonic, struck bells and dry wooden knocks. Nothing has a sharp attack. Playing it muted is part of the design too.

— NO INTERNET NEEDED —

Every board is on the device. Works on a plane, on the metro, out of coverage.

— SUPPORTER —

A one-time purchase: removes every ad and gives a purse of coins. Not a subscription, it does not repeat.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Supporter | $4.99 | one-time |
| 20 Hints | $0.99 | one-time |
| 60 Hints | $2.99 | one-time |
| 2000 Coins | $2.99 | one-time |
| 600 Coins | $0.99 | one-time |


## Is Kikko safe?

Not enough ratings yet to assess Kikko.

## Is Kikko legit?

Kikko: Hex Sum Puzzle appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for Kikko is 65 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 2 releases)

### 1.0.1 — 2026-09-30

Fixed a problem where purchases were not being processed correctly.

Text throughout the game is much larger and easier to read.

Two fingers zoom the board in and out; one finger moves around it once zoomed.

French added.

How to Play is now two steps and ends on its own.

Boards that split into separate islands are drawn closer together, so the stones and their numbers are larger.

A reworked transition between screens, and a new app icon.

### 1.0 — 2026-09-22

No release notes.

## Apps similar to Kikko

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Friday - by Friedemann Friese](https://appshunter.io/ios/app/friday-by-friedemann-friese/id1222916942) | 4.6 (365) | $3.99 | Games |
| [SingFast - Party Game](https://appshunter.io/ios/app/singfast-party-game/id6746864440) | 2.0 (4) | Free | Games |
| [Köylü Vampir : Sesli](https://appshunter.io/ios/app/koylu-vampir-sesli/id1510428967) | 3.0 (4) | Free | Games |
| [Card Thief](https://appshunter.io/ios/app/card-thief/id1186226470) | 4.7 (981) | Free | Games |
| [2048 by Gabriele Cirulli](https://appshunter.io/ios/app/2048-by-gabriele-cirulli/id868076805) | 4.8 (30,132) | Free | Games |
| [BadukPop Go](https://appshunter.io/ios/app/badukpop-go/id1472684271) | 4.8 (6,838) | Free | Games |

## More apps by Fırat DINC

- [PushUps Now: Workout Tracker](https://appshunter.io/ios/app/pushups-now-workout-tracker/id6757869868)
- [Flavour Route](https://appshunter.io/ios/app/flavour-route/id6758554216)
- [SoulGuide: Daily Bible](https://appshunter.io/ios/app/soulguide-daily-bible/id6758913734)
- [Mahjong Aura - Zen Tile Match](https://appshunter.io/ios/app/mahjong-aura-zen-tile-match/id6760037926)
- [Percio: Habits & Challenges](https://appshunter.io/ios/app/percio-habits-and-challenges/id6761202031)
- [Settle & Trade: Hex Space](https://appshunter.io/ios/app/settle-and-trade-hex-space/id6761205909)

All apps by Fırat DINC: https://appshunter.io/developer/1869393261

---

*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-02.*